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JEE Advance 2015
Paper-2
Question
When $\mathrm{O}_2$ is adsorbed on a metallic surface, electron transfer occurs from the metal to $\mathrm{O}_2$. The TRUE statement(s) regarding this adsorption is(are)
Select the correct option:
A
$\mathrm{O}_2$ is physisorbed
B
heat is released
C
occupancy of $\pi_{2 p}^*$ of $\mathrm{O}_2$ is increased
D
bond length of $\mathrm{O}_2$ is increased
✓ Correct! Well done.
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